US Patent 10043421 Foldable display device

A foldable display device includes a first display area, a second display area, and a first folding area between the first display area and the second display area. The first folding area includes first, second, and third folding axes. The first folding axis is between the second and third folding axes. The foldable display device is folded in one direction of the both directions on the basis of the first folding axis or folds in the other direction of the both directions on the basis of the second and third folding axes.